Temperature monitoring in Canada indicates a warming of shallow permafrost over the last two to three decades. Since the mid-1980s, shallow permafrost (upper 20-30 m) has generally warmed in the Mackenzie Valley. The gre...

This graphic shows the general responses to the need for policy from region to region around the world. The trend looks optimistic that many different types and level of policies are being implemented in most areas of th...

Since the dawn of civilization, people have been aggregating in towns and cities. This trend has reached an even higher rate with the dawn of industrialisation, and especially in developing countries, as seen in the grap...

Glaciers grow and retreat at intervals depending on local climate changes, particularly variations in temperature and precipitation .
Retreating and diminishing mountain glaciers all over the world, except in the Antarc...

Precipitation has increased over land at high latitudes of the Northern Hemisphere, especially during the cold season. Decrease in precipitation occurred in steps after the 1960s over the subtropics and the tropics from ...

In 2005, 2.8 per cent of total global
forest cover was made up of productive
forest plantations, amounting to
an area of approximately 110 million
hectares (FAO 2006a). According to the FAO, there was an
increase of...

Municipal waste is everything collected and treated by municipalities. Only part of it is comes from households, the rest is generated by small businesses, commercial and other municipal activities. A typical trend: as c...

Shows the Piscivore-zooplanktivore ratio between the years 1950-1995, in the Northeast Atlantic Ocean, and their relationship in the trophic composition of the ecosystem, which shows an ondulating trend, which has decrea...

Graph showing the amount (in millions of metric tonnes) of CO2 emissions from coal, gas and oil. Covers the years from 1990-2000 and predicts the trend to 2020. Information on the United States, Western Europe, Eastern E...

The graphic shows the total world energy consumption from 1970 to 2001, with projections to 2020. It shows the trend of increasing energy use since 1970, continuing until 2020. Over the last decade developed countries ha...

The graphic shows the trend of the number of harmful algal blooms in the Western Atlantic from 1970 to 1996. The excess growth of algae is often caused by pollution, and can have negative or fatal effects on some species...

The global fisheries catch has levelled off, reflecting a growing decline in most major fishing areas. This graphic shows the amount of global aquaculture production and of global capture fishery catches in millions of t...

Net annual addition to global wind energy generating capacity, general trend 1980-1995, in megawatts. Wind power represents a possible energy source to replace fossil fuels, like oil and coal, as well as non-renewable en...

The impact of income on lifestyle is apparent in China like elsewhere. There has been a massive surge in all consumer
goods with rising income in towns. The same trend can be observed to a much lesser extent in the coun...

The loss data on great natural disasters in the last decades show a dramatic increase in catastrophe losses. A decade comparison since 1960 is shown in the table. The reasons for this development are manifold and encompa...

The loss data on great natural disasters in the last decades show a dramatic increase in catastrophe losses. A decade comparison since 1960 is shown in the table. The reasons for this development are manifold and encompa...

Measurements on this valley-type glacier in the North Chuyskiy Range show a slightly negative annual mass balance trend culminating in an ice loss of about 4 m water equivalent over the period 1964–2005.

Data from satellite monitoring from 1966 to 2005 show that mean monthly snow-cover extent in the Northern Hemisphere is decreasing at a rate of 1.3 per cent per decade. For the calendar year of 2006 average snow-cover ex...

Large Alpine glaciers have retreated continuously since the mid- 19th century, whereas steep mid-sized glaciers reacted with readvances in the 1890s, 1920s and between the 1970s and 1980s due to the somewhat cooler and w...